How does night vision technology work? A Black Hawk helicopter seen through night vision goggles. (Thinkstock)
How does night vision technology work?
Lexile

You asked us a question. How does night vision technology work?
 
Our eyes allow us to see a wide range of lights. That changes when the sun goes down. When the sun goes down our ability to make out stuff drops off quickly. Colors fade. Things get fuzzy. Our eyes become useless. And we're what goes bump in the night.
 
Cue night vision technology.
 
There are two very cool types. The first is thermal imaging. It registers on the upper portion of the infrared light spectrum. It is invisible to humans. 

This kind of light is emitted as heat by things like warm bodies. It's emitted from recently driven cars and even some chemicals.

Thermal imaging devices can see through the fog, smoke and dust.
 
Type number two amplifies available light from the visible spectrum as well as some infrared light. It makes things look brighter than they appear to the naked eye. 

Most night vision equipment uses this imaging enhancement technology. But it's useless if it's pitch black.
 
It was originally developed to spot enemy targets. Now night vision is used for all kinds of things. It's used in this from military gear to baby monitors. Because you know, you've got to get the upper hand on these babies.

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CRITICAL THINKING QUESTION
Why would baby monitors use military technology?
Write your answers in the comments section below


COMMENTS (30)
  • darianv-3-bar
    4/29/2016 - 05:30 p.m.

    Baby monitors would use military technology because parents will want to keep an eye on their baby even when they can't see in the dark. My evidence is "Now night vision is used for all kinds of things. It's used in this from military gear to baby monitors. Because you know, you've got to get the upper hand on these babies." i think this article is good because its important to take care of babies.

  • kadew-
    5/04/2016 - 11:03 a.m.

    To see if ur baby is ok

  • brandonb-
    5/04/2016 - 11:05 a.m.

    I want nightvision

    • jacksons-
      5/04/2016 - 11:16 a.m.

      there is this shot u can get to have night vision but it goes in ur eye

  • simons-
    5/04/2016 - 11:06 a.m.

    I want night vision goggles

  • sydneys-
    5/04/2016 - 11:06 a.m.

    I liked how the article told us about the 2 different kind of night vision and what they were used for.

  • simons-
    5/04/2016 - 11:07 a.m.

    I want night vision goggles

  • tylerm-
    5/04/2016 - 11:08 a.m.

    Because they are important to keep an eye on

  • jacksons-
    5/04/2016 - 11:08 a.m.

    this atical is cool and I love night vison and now I know how it works

  • sydneys-
    5/04/2016 - 11:08 a.m.

    So parents would see how there baby or babies were doing in the night.

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